Los Angeles daily herald., 1887-04-05
ulp11s11ss Aeaanss ~ ceaiin

= IGoGDod the oeliet that spraying with
1zsoniates was the most promising of
anythine yst tried for this purpose.
80 maintained that while the remedy,
douhtlsss, would prove efiioacious, killing
~ oodlin larvA II used often enough,
4 would he . little premature to recon-.
moad Il - the rsmsdy, because the very
: poi1onous nature of the compounds, and
5knk Wo needed . thorough trial to
ooetlo ds6nitely the all.important ques-
tIon u either Of She arseniates would BE-
q eny danger to the consumer of fruits
! - peotected. Since expressing this,
4 hnso boon u Aetive correspondence with
S ~ 9hAe Entpanologlst Of Illinois, Prof.
q 4. Forbes, and I feel happy to state
~ his thorough experiments, although
Z vnnda on . comparatively small scale,
!. hovo proved % ny mind that IN
~ olinate OF the Eastern states,
Z ~ arsoniates can b. made decided
ensosss By proper application, thereby
mNing tWe-thirds Of an apple crop. and
tkaH 1here y no danger in using either
q thom h that climate, that is. If used
- eoooon. The Bulletin, No. l. Of Pro-
1a,ae uorbaA was kindly sent to me,
~ / have freely quoted from II in the
lpllsvlne. Professor Forbes has reached
4 - following concluslons: That the re-
nnlh d ence or twics spraying with
porla aroen n early spring before the
yonne applss had dropped upon their
S1ens, resulted In . saving Of about IS
- ssnt oi the apples exposed to injury
b ~ Goblin moth.
The srssnio remedies have, to my
knowledgs, been used by several per-
= l~k H. L.
besn moes Or lees saccessful, yet, except
nths oass Of apples sprayed with arsenic
oelueion b. Nsaara, Listle and Ousley, in
~ eaata Clara valley, - mentioned in
~ papse, no official analysis has been
uade * fruit treated with arsenic.
Ihess aYplss were found perfectly free
lron any trace of arsenic,. although
spraysd twics. and in the case of
II. Onslsy 50 per cent of the
fruit aaved. II must. however, be
borne IL mind that while arsenic,
a. asssnious acid, ID very soluble-in
fAct y dissolved by the least moisture
HAriD erpen and London purple are not,
ed vii remain on tho fruit even after
hsavy rninstorus, ~ has been proved by
rooent analysis in Illinois. Hence these
nnsl ~ regarded - :. .dscidsdly dan;
oerGl1es tahes. ussd i late. !, ac]bsa tie ap.
~ 11Asa shesi tsY1' is,@kAHgjSg doscn.
Il s6s3li ,tkAl sIf ! il .1Aes 'xrtqaf growth
: u the ahp1a : khats throws or the
poison, q none has been found on fruit
&satsd early, In the Eastern climate. If
theco b. tany possible danger from the
ase Of ihess Substances. it will be de.
1seninsd definitely, and vs. lhbll betr
III point espeoially = hi&d il our; ex-
porimsuts this sumn6er. We ask every
oas disposed to.experiment to note care
fally8j da6 and sm1nnSt iof 'applica-
don, the condftip1 6f thsdruit sprayed.
I'D nlso the STATE Of the weather. A
nnmbsr Of samples Of fruit thus treated
and analysed will settle the question Sf
ths danger TO the conSunerf
PARIS GREEN.
4 Psxis ereen 4 compound Of arsenic |
and boIsbr. ~ u faf mfe powprfnl
poisohj Han kzAsni@ alopeS and i not |
solub8 - 1Atsh 1eno till remain
mach longer on the trees. As stated
before, In the Eastern States it 10 used
n preference to asseDicf es1its is mot 20 /
1A6ls 70 be washed n bytraint apd9an.
ethsr advantsgs.is hat itwilInot hurt !
~ foliage, except whom used in an
ovsrdoss. Such ct least is the report
IRON The East. have taken considerable
palns 70 ascertain If any damage has
rssulted from it, uss in this State. I
hAvs learned recently, on . visit to
SsssH IT, 1fSss5d *iMsS rs Pasis green iof 7
- purpose Of killing diabrotics beetle,
safSfsd severely, but used upon apples
and pears Il had no bad effect. Doubt.
loss jtiwill lbhnfaand! that PHis green in
market will vary in strength; the pro.
portlcn 10 be based ON the percentage of
= !.. e. sls s,'sss BB,is H. q sasi
sjsJkj3rbsf USED. ! ] III x Ii
Ons poand of Paris green to fifty.four
anllons Of water u the strength used by
Rroea E>gbes for, bia q Auecessful expert
ueats. Oth0r parties claiming to have
hesn equally successful have used only
half The strength. The Paris green is
otlf9T aAd ImfxNdTwith thp water andt
kept Jeoubtahdy JstirssA whilb being
LONDON PURPLE.
LdSdops 1p;plfSppjs ;lSpIj 'jo u smother arsenical
ssssI sosarts & re silsiilns liz dy1s. III and contains
Nne, arsenious acid ard carbonaceous
mat6R. yaIt 10 more tsolubles more adhe-
1lvs.slsn spsisenaus aad slsss ezpsnsivst
fhs3 yssiaasaa4si ,srr 90 q aea, CIV. 4
Tbibnn0peupd n aaao Francisco y
Warth, ihy ssuau quantities twenty. five
eentnD9 ponpds qand hy larger apsnti'
~, tWsnty.two and . half cents apound.
Il y mixed to pasts and then di.
latod.'H pfofS156f Cook, 10f Michigan, Z
xeeoiHdmtndss ~ pound - fifty EAlions
q wAstfs otksfs ASdhstle - one pound
9 100 hlll0nss nWe. intend 70 try these
di6eeUnt strengths ourselves, but should
not srsoeannend i1ess than one pound to
100 gallons. Al the compound contains
soms arsenious acid, it would be I'D.
visable to use II On cloudy days, if pos-
ibls. = II might danngS the foliage. \ A
WHITE AHsENIc, OR ARsRNrous ACID.
One pound to 200 gallons of water.
ehe arsenic being first dissolved by being
beilsd with caustic potash. Expert.
meats with this compound in Santa
orr scoD DSipllshsd coAid dsrable good, |
-. III plain, Z without any I
dssesr to the consumer; but in
s. ~ sst s,sss a.mased.finso@s
sases badly, ID Others partially; and in
ouly one case, where the application was
mads, daring the morning Of sselpudy |
day, ay,nNiaDagansasoansadste - sthes4reesf'
Although Ies promising than any of the
oshsr remedies. lde(erpes Hid. II,
MANNER OF APPLICATION.
It 4 Of Qreat importance that whom
applisd the poison be we'll mixed In the
water, and in the case of Paris green
s.d kende9 puTple i i ,.S necessary & e
Bixturs should be thrown over the
frso 20 that every apple or pear is
Wsttsd, = it ~ " AttaslJ toisoning of
~ fruit thAs Che egg or worm is killed.
zhrown with fine spray, two and one.